Apparatus for leaching sacchariferous vegetables.



M. PASOHEN. APPARATUS FOR LEAGHING SAGOHARIFEROUS VEGETABLES.

APPLIOATION IILED 001215, 1012.

r J I WITNEJSEJ,"

ATT'V.

- Patented N v. 4, 1913.

MAX PASCHE'N, OEKMHEN, GERMANY.

APPARATUS FOR SAGCH ARIFEROUS VEGETABLES.

Specification of Letters @a'ten't.

Patented Nov. 4, 1913.

Application meaectobex 15, 1912. s rial in. 72mm,

i To all whom ,z't may concern..-

. Be it known that I, MAX Freeman, 9. subject of .the German Emperor, residing at 1 Schillerstrasse, Kothen, Anhalt, the German Empire, have invented certaln new and useful Improvements in Apparatus for Leachin Sacchariferous Vegetables, which t e following is a spec' cation.

The present invention has for its ob ect 10 a chamber appar tus tor leaching sacchar1f ferous vegetable slices. This apparatus con- Y sistrs the known manner of an inclined trough in which .theguicetlows from the upper to the lower en slices being transferred by discharge devices firom each chamber to the next higher chamber .over the partitions dividing the several chambers which rtitions leave a ortion .of the cross section of the trough ree. {Experience has shown that it is impossible with apparatus of this kind to effeet a sufficiently uniform leaching ofthe slices; in particular if the specific weight of the juices and of the slices is essentially diflerent in many cases only a strati'fied leaching of the slices takes place. Furthermore .i paratus are separated by partitions consistmg of a single wall over which the slices fall in. the one direction and in the liquid in the other direction, such opposite vertical streams interfere-with each other, so. that no sulficient leaching-effect .can be obtained. This defect cannot be obviated by arranging simply for the liquid holes or. passages in the foot of the partitions, because in this case the liquid would flow too in the opposite direc- 15 ,tion .to the slices which are carried upward. by agitator .and conveyer mechanism, the

the leaching chambers of such apj which chambers have inlet openings for the liquid of the higher chamber at the upper end of one wall and outlet openings to the lower chamber at the lower and of their other wall.

By the invention it is first made possible to leach suficiently slices in counterscurrent. Practical experience has shown that the new apparatus uslng only counter-current can be more than 3 times shorter than the older apparatus using a mixed system of parallel and counter-current. Correspondmgl the time of leaching is shortened and in t e same groportion the purity .of the juices.- Also y the new apparatus a rear, amount 03f heat is saved in the leac ing process, because the li uid and the slices in the counter-current w liolly exchange their temperatures, so that hot juices and cold slices can beohtained which is deemed to be every great advantage. Further in the new afdgaratus pumps are avoided which in the r apparatus brin the liquid from one leaching chamber to %he other.

- the new apparatus .the juice is caused to flow through the several chambers not merely in the direction of their length but also to flow through the slices obliquely upward ,in the diagonal direction of the mass of slices located in the chamber. With this object the several leaching chambers are. separated b inversion chambers which .the juice is also to enter but not the slices. These chambers are termed inversion chambers because the juice enters them at their upper end and issues again below so that .the chambers serve .to convey the 'uice from the upper end of one leaching 0 amber back to the lower end of the next chamber. Owing to this arrangement the path of the juice .thro li the masses of slices is considerably lengt ened wherehy the leach-v ingis improved. A .further improvement in this connection is insured owing to the .fact that in view of the inversion chambers, between each pair 'of adjacent leaching chambers juice and slices are completely separated .one from the other so that the slices. 7

are 'eifectually prevented from remaining I always in .contact with the same stratum of uice.

'juice supplied through the pipe The inversion chambers can be constituted with especial advantage by walls assembled to form an inverted V, one of them being perforated at its up er part and'the other at its lower part. ith this construction it is impossible for the slices that are thrown over the inversion chambers by the ejection devices, to. remain at rest but the are obliged to roll over the roof-shaped o lique walls of the inversion chamber unimpeded down into the next chamber.

An embodiment of the invention is diagrammatically illustrated by way of example in the accompanying drawing, 'in whichev Figure 1 is a longitudinal section. Fig. '2 is a section on the line A-B in Fig. 1, through the trough alone.

The difiusion or leaching apparatus consists of the semi-circular inclined trough a which is subdivided into a number of leaching chambers d and inversion chambers e by -partitions b and c which leave a portion of its cross. section free. The partitions b and c are assembled to form an inverted V and terminate below the driving shaft f which passes through the entire length of the trough. The walls 6 are plerforated at their lower end at g and the we so at their upper end at h. I

The feed. chute i is provided for supplying the slices; the slices as they fall are carried upward by the conveyer arms 1: which arefixed with an appropriate (1 cc of inclination upon the shaftf (for t e sake of clearness only on the ends of the trough these arms are shown Fig. 1) into t e several chambers d and by means of the ejection devices I which are made considerably wider than the agitator arms 70, and which are also represented at the ends of the trough only, they are thrown over the summit of the walls I), c assembled V-fashion, into the next chamber d. The liquid serving for the leaching flows in counter current to the slices which is usually water or m. Th s juice flows in the direction indlcated by the arrow in the right hand half of Fig. 1 throu h the holes h in the walls 0 from above into te inversion chambers e while at the lower'end of these chambers it flows ,out

throu h the perforations g in the walls I) into the next lower chamber and so forth,

as indicated by the straight arrow and,

shown in the penultimate chamber (Z, it does not pass through the mass of slices accumulated in the chamber merely in the longitu-- dinal direction of the trough but also in the dia 'onal direction from below upward and inslde the inversion chambers c it is cdmpletely separated from the slices thrown over these chambers. The leached slices are conveyed from the last chamber (5 at the inmate right hand end of the trough by a conveyer device in the form of a worm a or the like mechanism. The juice extracted flows through the pipe p for further treatment.

'The juice fiowlng from the extreme right hand chamber at is carried through the pipe ck into the leaching apparatus by the g in the direction indicated by the arrow.

pe m. @bviously instead of assembling the 1Epartitlons b and c V-fashion they might orm moved by some other convenient conveyer' into the pipe 0 from which they can be re- U-shaped members; a lurality of the novel apparatus might also e arranged in series. What I claim and desire to secure by Letters Patent of the United States is 1. A chamber apparatus for leaching sac chariferous vegetable slices by counter-current, comprising an inclined trough with an inlet for: the slices at one end and with an inlet for the liquid at the other end the outlets for slices and liquid being also at opposite ends of the trough, the latter being" divided by partitions into several chambers,

agitating and conveying means in the chambers adapted to throw the slices over the several artitions and separate overfalls being provided for the passage of the liquid from. one chamber to the next.

2. A chamber apparatus for leaching sacchariferous vegetable slices by counter-current, comprising an inclined trough with an inlet for the slices at one end and with an inlet for the liquid at the other end the outlets for slices and liquid being also at opposi'te ends of the trough, the latter belng divided by partitions into several chambers, agitating and conveying means in the chambers adapted to throw the slices over the several artitions and separate overfalls being provided for the passage of the liquid from one chamber to the next, said over alls comprisin hollow partitions forming chambers, said 0 liquid'ofthe higher chamber at the upper end of one wall and having outlet 0 enings communicating with the lower c amber formed in the lower end of the other wall.

3. A chamber apparatus for leaching sacchariferous vegetable slices by counter-current, com rising an inclined trough with an inlet for t e slices at one end and with an inlet for theli uid at the other end the outlets for slices an liquid being also at opposite ends of the trough, the latter being divided by partitions into several chambers, agitating and conveying means in the chambers adapted to throw the slices over the several partitions and separate overfalls being provided for the assage of the liquid from one chamber to t e next, said over-falls comprisin hollow artitions forming chambers, said 0 ambers aving inlet openings for the,

ambers having inlet openings for'the liquid of the higher chamber at the upper In testimon ,whereof I aflix my signature end of one wall and having outlet opemngs in presence 0 two witnesses. Y communicating with the lower chamber MAX PASCHEN. formed in the lower end of the other wall Witnesses:

5 said walls forming a chamber in the form 0% MILLI BAILERBTEIN,

an inverted V Fnrrz TO KE. 

